Flywheel and dual clutch module assembly

ABSTRACT

A dual mass flywheel and dual clutch module assembly includes a connector plate and a drive plate. The connector plate is fastened to a center plate of the dual clutch module and has a plurality of castellation tabs disposed on an inner periphery of the connector plate. The drive plate drivingly connected to a flywheel member of the dual mass flywheel and includes a plurality of castellation tabs disposed on an inner periphery of the drive plate. The plurality of castellation tabs of the connector plate are interleaved with the plurality of castellation tabs of the drive plate.

TECHNICAL FIELD

The present disclosure relates to powertrains and more particularly to adual mass flywheel connector plate for connecting an engine crankshaftto a dual clutch module of a transmission.

BACKGROUND

The statements in this section merely provide background informationrelated to the present disclosure and may or may not constitute priorart.

A typical dual clutch transmission is paired with a dual mass flywheelto filter a wider range of vibrations from the engine. Currently, thedual mass flywheel is fastened to the crankshaft of the engine prior tothe transmission, and therefore the dual clutch module, is assembled tothe bellhouse of the engine. Accordingly, the dual clutch module isdrivingly connected to the dual mass flywheel via a connection otherthan fasteners or the like. This necessitates a larger overall packagingenvelope with some potential for loss performance.

While current connections between a dual mass flywheel and a dual clutchmodule achieve their intended purpose, the need for new and improvedconnection configurations which exhibit improved performance, especiallyfrom the standpoints of packaging efficiency, ease of assembly, androbustness is essentially constant. Accordingly, there is a need in theart for a dual clutch module and dual mass flywheel connection havingimproved packaging while providing manufacturing flexibility androbustness.

SUMMARY

The present invention provides a dual mass flywheel and dual clutchmodule assembly comprises a connector plate and a drive plate. Theconnector plate is fastened to a center plate of the dual clutch module.The connector plate has a plurality of castellation tabs disposed on aninner periphery of the connector plate. The drive plate is drivinglyconnected to a flywheel member of the dual mass flywheel. The driveplate having a plurality of castellation tabs disposed on an innerperiphery of the drive plate. The plurality of castellation tabs of theconnector plate are interleaved with the plurality of castellation tabsof the drive plate.

In one example of the present invention, the plurality of castellationtabs of the drive plate extend in a first axial direction and theplurality of castellation tabs of the connector plate extend in a secondaxial direction which is opposite the first axial direction.

In another example of the present invention, the connector plateincludes a plurality of tabs on an outer periphery of the connectorplate, the plurality of tabs having at least one fastener bore alignedwith a fastener bore of the center plate of the dual clutch module, andwherein a rivet is disposed in each of the fastener bores of theconnector plate and the center plate.

In yet another example of the present invention, each one of theplurality of castellation tabs of the drive plate include a pilotfeature.

In yet another example of the present invention, each one of theplurality of castellation tabs of the connector plate include a pilotfeature.

In yet another example of the present invention, the drive plate has anouter periphery including a plurality of tab portions that are keyed torotationally connect with a flywheel member of the dual mass flywheel.

In yet another example of the present invention, the connector plate hasan outer periphery including a plurality of tab portions each having aradially extending portion adjacent to an axially extending portionadjacent to a fastening portion.

In yet another example of the present invention, the fastening portionof the connector plate includes at least one fastener bore and at leastone structural stiffener.

In yet another example of the present invention, the outer periphery ofthe center plate includes a plurality of axially extending tabs havingat least one fastener bore, each of the plurality of tabs abuts thefastening portion of one of the plurality of tabs of the connectorplate, and a rivet is disposed in each of the fastener bores of theconnector plate and the drive plate.

The above features and advantages and other features and advantages ofthe present invention are readily apparent from the following detaileddescription of the best modes for carrying out the invention when takenin connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is a cross section of an embodiment of a dual mass flywheel and adual clutch module, in accordance with the present invention;

FIG. 2 is a perspective view of portion of an embodiment of a dualclutch module, in accordance with the present invention; and

FIG. 3 is a perspective view of a portion of an embodiment of a dualmass flywheel connector plate and a dual clutch module, in accordancewith the present invention.

DESCRIPTION

Referring to FIG. 1, a dual clutch module and a dual mass flywheel aregenerally indicated by the reference numbers 10 and 12, respectively.The dual clutch module 10 includes a first and a second clutch plates14, 16, a center plate 18, a connector plate 20, a first and secondlever plates 22, 24, a first and second friction disc 26, 28, and afirst and second actuator plate 30, 32. The center plate 18 is connectedon the outer periphery to the connector plate 20 via a plurality ofrivets 34. However, other types of fasteners may be used withoutdeparting from the scope of the invention. The first friction disc 26 isdisposed between the central plate 18 and the first clutch plate 14 andis connected for common rotation with a first transmission input shaft(not shown). The second friction disc 28 is disposed between the centralplate 18 and the second clutch plate 16 and is connected for commonrotation with a second transmission input shaft (not shown). The firstactuator plate 30 is connected to the outer periphery of the firstclutch plate 14. The second actuator plate 32 is connected to the outerperiphery of the center plate 18. The first lever plate 22 is disposedbetween the first actuator plate 30 and the second actuator plate 32.The second lever plate is disposed between the second actuator plate 32and the second clutch plate 16. The lever plates 30, 32 are selectivelyactuated for axial movement by a dual clutch actuator (not shown). Asthe first lever plate 22 is axially actuated by the dual clutchactuator, the first lever plate 22 pivots off the second actuator plate32 and axially translates the first actuator plate 30 thus compressingthe first friction disc 26 between the first clutch plate 14 and thecenter plate 18 (actuator plate 30 is connected to the first clutchplate 14). As the second lever plate 24 is axially actuated by the dualclutch actuator, the second lever plate 24 pivots off the secondactuator plate 32 and axially translates the second clutch plate 16compressing the second friction disc 28 between the second clutch plate16 and the center plate 18.

The dual mass flywheel 12 includes a first and second flywheel 36, 38, astarter ring gear 40, a plurality of springs 42, and a drive plate 44.The first flywheel 36 is connected for common rotation with the engineoutput shaft (not shown). The second flywheel 38 is disposed coaxiallywith the first flywheel 36. Each of the plurality of springs 42 has afirst end and a second end with the first end connected to the firstflywheel 36 and the second end connected to the second flywheel 38. Thedrive plate 44 is rotationally connected to each of the second flywheel38 and the connector plate 20 of the dual clutch module 10.

Referring now to FIG. 2, a detailed view of an embodiment of the dualclutch module 10 and dual mass flywheel 12 is illustrated and will nowbe described. The connector plate 20 includes a plurality of tabportions 46 extending from an outer periphery 48 of the connector plate20. Each of the plurality of tab portions 46 includes a radiallyextending portion 50, an axially extending portion 52, and a fasteningportion 54. The axially extending portion 52 is disposed between theradially extending portion 50 and the fastening portion 54. Furthermore,the fastening portion 54 includes at least one fastener bore 56 and atleast one structural stiffener or rib 58. Additionally, the center plate18 has a plurality of tab portions 60 extending radially from an outerperiphery 62 of the center plate 18. The each of the plurality of tabportions 60 of the center plate 18 include at least one fastener bore 64and align with the fastening portion 54 of the plurality of tab portions46 of the connector plate 20. A rivet 34 is disposed in each of thefastener bores 48, 64 thus connecting the tab portions 46, 60 of theconnector plate 20 and the center plate 18 respectively.

Referring now to FIG. 3, a detailed view of an embodiment of the dualclutch module 10 and dual mass flywheel 12 is illustrated and will nowbe described. The drive plate 44 has an annular disc shape with an innerperiphery 66 and an outer periphery 68. The drive plate 44 includes aplurality of tabs or castellations 70 disposed on the inner periphery 66of the drive plate 44 and extending in a first axial direction D1. Thecastellations 70 are equal in width while having an equal distance ofspace between each castellation 70. The castellations 70 may alsoinclude a castellation piloting feature 72 at the end or top of thecastellation 70. The piloting features 72 aid in assembly of theflywheel 12 to the dual clutch module 10. Disposed on the outerperiphery 68, the drive plate 44 also includes a plurality of tabportions 74 that are keyed to rotationally connect with the secondflywheel 38.

The connector plate 18 also includes an inner periphery 76 on which isdisposed a plurality of tabs or castellations 78 extending in a secondaxial direction D2 which is opposite the first axial direction D1. Thecastellations 78 of the connector plate 20 have a width equal to thespace between the castellations 70 of the drive plate 44. Furthermore,the space between the castellations 78 of the connector plate 20 have awidth equal to the width of the castellations 70 of the drive plate 44.The castellations 78 may also include a piloting feature 80 at the endor top of the castellation 78. The piloting feature 80 aids in assemblyof the flywheel 12 to the dual clutch module 10 by aligning thecastellation 78 of the connector plate 20 to the space between thecastellations 70 of the drive plate 44. When assembled, thecastellations 70 of the drive plate 44 are interleaved with thecastellations 78 of the connector plate 18 as shown in FIG. 3.

The description of the invention is merely exemplary in nature andvariations that do not depart from the spirit of the invention areintended to be within the scope of the invention. Such variations arenot to be regarded as a departure from the spirit and scope of theinvention.

1. A dual mass flywheel and dual clutch module assembly comprises: aconnector plate fastened to a center plate of the dual clutch module,the connector plate having a plurality of castellation tabs disposed onan inner periphery of the connector plate; and a drive plate drivinglyconnected to a flywheel member of the dual mass flywheel, the driveplate having a plurality of castellation tabs disposed on an innerperiphery of the drive plate, and wherein the plurality of castellationtabs of the connector plate are interleaved with the plurality ofcastellation tabs of the drive plate, the plurality of castellation tabsof the drive plate extend in a first axial direction, and the pluralityof castellation tabs of the connector plate extend in a second axialdirection which is opposite the first axial direction.
 2. (canceled) 3.The dual mass flywheel and dual clutch module assembly of claim 1wherein the connector plate includes a plurality of tabs on an outerperiphery of the connector plate, the plurality of tabs having at leastone fastener bore aligned with a fastener bore of the center plate ofthe dual clutch module, and wherein a rivet is disposed in each of thefastener bores of the connector plate and the center plate.
 4. The dualmass flywheel and dual clutch module assembly of claim 1 wherein eachone of the plurality of castellation tabs of the drive plate include apilot feature.
 5. The dual mass flywheel and dual clutch module assemblyof claim 1 wherein each one of the plurality of castellation tabs of theconnector plate include a pilot feature.
 6. The dual mass flywheel anddual clutch module assembly of claim 1 wherein the drive plate has anouter periphery including a plurality of tab portions that are keyed torotationally connect with a flywheel member of the dual mass flywheel.7. The dual mass flywheel and dual clutch module assembly of claim 1wherein the connector plate has an outer periphery including a pluralityof tab portions each having a radially extending portion adjacent to anaxially extending portion adjacent to a fastening portion.
 8. The dualmass flywheel and dual clutch module assembly of claim 7 wherein thefastening portion of the connector plate includes at least one fastenerbore and at least one structural stiffener.
 9. The dual mass flywheeland dual clutch module assembly of claim 8 wherein the outer peripheryof the center plate includes a plurality of axially radially extendingtabs having at least one fastener bore, each of the plurality of tabsabuts the fastening portion of one of the plurality of tabs of theconnector plate, and a rivet is disposed in each of the fastener boresof the connector plate and the drive plate.
 10. A dual mass flywheel anddual clutch module assembly comprises: a connector plate fastened to acenter plate of the dual clutch module, the connector plate having aplurality of castellation tabs extending in a first axial direction anddisposed on an inner periphery of the connector plate; and a drive platedrivingly connected to a flywheel member of the dual mass flywheel, thedrive plate having a plurality of castellation tabs extending in asecond axial direction toward the connector plate, the second axialdirection is opposite the first axial direction, and the plurality ofcastellation tabs are disposed on an inner periphery of the drive plate,and wherein the plurality of castellation tabs of the connector plateare interleaved with the plurality of castellation tabs of the driveplate.
 11. The dual mass flywheel and dual clutch module assembly ofclaim 10 wherein the connector plate includes a plurality of tabs on anouter periphery of the connector plate, the plurality of tabs having atleast one fastener bore aligned with a fastener bore of the center plateof the dual clutch module, and wherein a rivet is disposed in each ofthe fastener bores of the connector plate and the center plate.
 12. Thedual mass flywheel and dual clutch module assembly of claim 11 whereineach one of the plurality of castellation tabs of the drive plateinclude a pilot feature.
 13. The dual mass flywheel and dual clutchmodule assembly of claim 11 wherein each one of the plurality ofcastellation tabs of the connector plate include a pilot feature. 14.The dual mass flywheel and dual clutch module assembly of claim 11wherein the drive plate has an outer periphery including a plurality oftab portions that are keyed to rotationally connect with a flywheelmember of the dual mass flywheel.
 15. The dual mass flywheel and dualclutch module assembly of claim 11 wherein the connector plate has anouter periphery including a plurality of tab portions each having aradially extending portion adjacent to an axially extending portionadjacent to a fastening portion.
 16. The dual mass flywheel and dualclutch module assembly of claim 15 wherein the fastening portion of theconnector plate includes at least one fastener bore and at least onestructural stiffener.
 17. The dual mass flywheel and dual clutch moduleassembly of claim 16 wherein the outer periphery of the center plateincludes a plurality of radially extending tabs having at least onefastener bore, each of the plurality of tabs abuts the fastening portionof one of the plurality of tabs of the connector plate, and a rivet isdisposed in each of the fastener bores of the connector plate and thedrive plate.
 18. A dual mass flywheel and dual clutch module assemblycomprises: a connector plate connector plate having a plurality of tabson an outer periphery, the plurality of tabs having at least onefastener bore aligned with a fastener bore of a center plate of the dualclutch module, and wherein a rivet is disposed in each of the fastenerbores of the connector plate and the center plate, the connector platefurther having a plurality of castellation tabs extending in a firstaxial direction and disposed on an inner periphery of the connectorplate; and a drive plate having an outer periphery including a pluralityof tab portions that are keyed to rotationally connect with a flywheelmember of the dual mass flywheel, the drive plate further having aplurality of castellation tabs extending in a second axial directiontoward the connector plate, the second axial direction is opposite thefirst axial direction, and the plurality of castellation tabs aredisposed on an inner periphery of the drive plate, and wherein theplurality of castellation tabs of the connector plate are interleavedwith the plurality of castellation tabs of the drive plate and each oneof the plurality of castellation tabs on the connector plate and thedrive plate have a pilot feature.
 19. The dual mass flywheel and dualclutch module assembly of claim 18 wherein the connector plate has anouter periphery including a plurality of tab portions each having aradially extending portion adjacent to an axially extending portionadjacent to a fastening portion.
 20. The dual mass flywheel and dualclutch module assembly of claim 19 wherein the fastening portion of theconnector plate includes at least one fastener bore and at least onestructural stiffener.
 21. The dual mass flywheel and dual clutch moduleassembly of claim 20 wherein the outer periphery of the center plateincludes a plurality of radially extending tabs having at least onefastener bore, each of the plurality of tabs abuts the fastening portionof one of the plurality of tabs of the connector plate, and a rivet isdisposed in each of the fastener bores of the connector plate and thedrive plate.